Process and apparatus for producing paper sleeves and coils with reenforcements wound around



June 24,1930. MAJER 1,765,928

PROCESS AND APPARATUS FOR PRODUCING PAPER SLEEVES AND COILS WITH REENFQRCEMENTS WOUND AROUND Filed July 50, 1928 Patented June 24, 1930 UNITED STATES CHRISTIAN MAJER, OF

PATENT OFFICE TUBINGEN, GERMANY raoenss AND APPARATUS FOR rnonucme rarer. SLEEVES AND coins wrrn REENIORCEMENTS Application filed July--30, 1928, .Serial No.

. This invention relates to a method and an apparatus for producing paper sleeves and bobbins with reenforcements .of any kind, consisting of wound up paper strips. The

method is characterized in that the paper strips are cut from an endless paper band fed by means of lateral devices to the paper sleeves wound on the winding spindles.

The devices for feeding the strips consist of oscillatable arms, levers or slides, which insert the paper strip rnder the last windingof the sleeve. On the conve ing devices brakes are provided which con not the strip by stronger braking on the outer side towards the inner guide, whereb a winding is obtained which is accurately uniformly superposedso that a quite smooth end face of the reenforcemeut is obtained.

The method and the a paratus for producmg paper sleeves wit -wound-up reen-' fol-cements areillustrated, by way of c ample, in the accompanying drawing 1n which: v

Fig. 1 shows the apparatus in cross sect1on..

Fig. 2 is atop plan view of Fig. 1.. Figs. 3 and 4 show detailsof the feeding device on largerscale. Fig. 4 shows by way of made-on the apparatus.

The strips 7 are periodically severed from the end of the paper-band land fed by the example a sleeve device 2 tothe winding spindles 3. As

shown in the drawing thestrip .feeding devlces consist of oscillatable arms 4, carrying at their ends guide-plates 5, 6 between which the paper strips are guided. On the-guide into the guides plates brakes 8 of any suitable construction are arranged and designed .to exert abrak i ingact on on the strip '7- at "the windingup. The brake 8 is constructed so that'it- -exerts a stronger pressure on the outer edge of the strip. whereby this strip is' permanently pressed-against an inner guide 10, so that an accurately uniform winding of the strip and a smooth end-face of the same are obtained.-

The feeding of the strip 7 to a sleeve 11 takes place at the moment before the end 12 of the sheetdesigned to form the sleeve has been wound up. The projecting portion of woonn aao mn 296,386; andin Germany'J'une 25, 1926.

7 are cut alternately inclined obliquely to the right and to the left and fed to the winding spindles 3 by the feeding devices 2 from both sides. z The guides 5, 6 withthe brake 8 may be oscillatable when mounted on an arm4,or stationary without the arm4.

The severed strips -7 may be inserted into the guides 5, 6 mechanically or.by hand.

Instead of providing a winding spindle 3- on each side of the paper sheet only one winding spindle 3 may be arranged on one side.

shown in Fig. 4, have to be-produced the winding spindles must be'arranged on both sides and the strips cut as shown in Fig. -1, as they are cut obliquely in opposite directions. For producing sleeves with cylindrical reenforcements the winding devices 4, 5and 3 I are arranged only on one side. The strips 7 might be cutprelimlnar 'ily and then inserted into the guides 5, 6 by-hand. f or with the aid of a mechanical device.

The brake8 may consist, instead of a'brake I shoe controlled by a blade spring a, of. a

movable brake block-forming an arm 'and the like. I

To facilitate t e insertion of the str1p'7 5, 6 and under the brake shoe 8, the upper guide 6 which carries the brake shoe 8'may be arranged so that it can be in.-

termittently lifted or oscillated.

The winding up strip 7 is held by a separate holder until the projecting front end has been gripped by the end 12 of the sleeve.

the sleeve 11 The device may otherwise be any suitable manner.

under the action of the brake. constructed in '1. A feeding device forfeeding severed 7 If sleeves with conical reenforeements, as y sheet, said strip being then wound around 5 paper strips to a windin spindle for wind-, ing said strips around strip wound .on said winding spindle consisting of an oscillatable arm and of two guides on said arm for conducting the to a winding spindle.

y 2. A device for fecding a severed paper strip to a winding spindle for winding said 'strip'around the strip wound on said winding spindle, comprising in combination an oscillatably mounted arm, periodically oscillated, a lower guide plate on the end of said arm, an upper guide plate on the end of said arm spaced a certain distance from said lower guide plate, av guide at the side of said guide plates, a brake extending through I said upper guide plate, and a blade spring acting upon said brake so, that said brake exerts a stronger pressure on the outer edge of said paper strip than on' the inner edge of the same to permanentl press said strip against said .latera guide.

In testimony whereof I aflix my signature. CHR. MAJER,

paper strip periodically paper 7 I 

